65 Series Marine Carbon Monoxide Alarm 12V - Surface Mount - WhiteFeatures:NMMA Listed ComponentMeets ABYC A-24 Standard - CARBON MONOXIDE DETECTION SYSTEMSListed to UL 2034 Carbon Monoxide Alarms - Marine UseMeets ISO: 12133 Small craft - Carbon Monoxide (CO) detection systemsWorks in extreme temperatures - Only marine CO alarm listed to operational temperatures of -40Adeg F to 158Adeg F. Alarm has consistently held up in the excessive cold and heat due to high quality sensorNo False Alarms due to new boat smell, outgassing or non-hazardous levels of hydrocarbon gases encountered while boatingLow Current Draw. Innovative micro current circuit saves battery power for the boater. 60 milliamp (.06 amp.) current drawAlarm Mute with Auto Reset. With a press of a button, the mute circuit will temporarily silence the alarm while the boater ventilates the cabin. Alarm will reactivate if it still senses dangerous levels of COEnd of Life Signal alerts boater to replace the alarm after 5 years of serviceMemory Scan. Retains the CO level that activated the alarm. After ventilation, it is impossible to know what the CO level was unless the detector has memory